A fallen Klingon house led by the zealot T'Kuvma, whose followers aboard an ancient sarcophagus ship provoked the Federation-Klingon war of 2256 in the name of Kahless.
The House of T'Kuvma appears in the opening episodes of Discovery, The Vulcan Hello and Battle at the Binary Stars. T'Kuvma, who restored his father's abandoned ship as a boy, welcomes outcasts such as the albino Voq and preaches that the Federation's talk of peace threatens Klingon identity.
By lighting an ancient beacon he summons the leaders of the twenty-four Great Houses and draws Starfleet into battle. He is killed by Michael Burnham during a boarding attempt in which Captain Georgiou also dies, and becomes the martyr he wished to be.
Voq inherits the leadership as Torchbearer but is deposed by Kol of the House of Kor, who seizes the ship and its cloaking device. L'Rell, loyal to T'Kuvma's ideals, eventually takes power over the Empire.